420413222421 has 12 divisors (see below), whose sum is σ = 607335425580. Its totient is φ = 280242305280.

The previous prime is 420413222419. The next prime is 420413222429. The reversal of 420413222421 is 124222314024.

It is a happy number.

420413222421 is a `hidden beast` number, since 4 + 2 + 0 + 4 + 13 + 222 + 421 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 390267581796 + 30145640625 = 624714^2 + 173625^2 .

It is not a de Polignac number, because 420413222421 - 2¹ = 420413222419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420413222429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2684316 + ... + 2836613.

It is an arithmetic number, because the mean of its divisors is an integer number (50611285465).

Almost surely, 2^420413222421 is an apocalyptic number.

It is an amenable number.

420413222421 is a deficient number, since it is larger than the sum of its proper divisors (186922203159).

420413222421 is a wasteful number, since it uses less digits than its factorization.

420413222421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5529396 (or 5529393 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 420413222421 its reverse (124222314024), we get a palindrome (544635536445).

The spelling of 420413222421 in words is "four hundred twenty billion, four hundred thirteen million, two hundred twenty-two thousand, four hundred twenty-one".